Manufacturer Part Number: N112-185|Type|Box Rail Hanger with BoltFor Use With|Box RailMaterial|SteelFinish|Zinc-PlatedMaximum Wheel Diameter|2.14inOverall Length|4.49inOverall Width|1.61inOverall Height|4.72inNumber Of Wheels|Includes|Connecting Bolts; NutsPSC Code|5340UNSPSC Code|